* add possibility to use native sendFile from OS for HttpServerResponse
add option POCO_USE_SENDFILE_FOR_HTTPSERVER, default - OFF
add test for HttpServer - testFile
add define fro Config.h POCO_USE_SENDFILE_FOR_HTTPSERVER
* my fail, be carefull with macro and brackets
* replace option POCO_USE_SENDFILE_FOR_HTTPSERVER with compiletime
detected macro POCO_HAVE_SENDFILE
replace types for sendFile with platform depended
wrap possibility of using sendFile with macro, if sendFile doesn't exist
in OS, then all methods don't exist
* remove option POCO_USE_SENDFILE_FOR_HTTPSERVER from ci.yml
* wrap testSendFile in the suite with define POCO_HAVE_SENDFILE
* try fix compile problem with emscripten
* oh, emscripten again
* fix logical error in testSendFile
* fix problem with cmake-specific macro when usinf make-project
* revert types from platform depended to Poco::Int64 and Poco::UInt64
for sendfile
* add sendfile method for streamsocket
* add mswsock.lib to the project files and templates
* remove /DPOCO_NO_AUTOMATIC_LIBS for cmake windows build
* merge from upstream
* merge from upstream
* fix code stile
add NotImplemented exception for unsupported platforms
exculude <sys/sendfile.h> for POCO_EMSCRIPTEN, because https://
github.com/emscripten-core/emscripten/pull/16234
* add iostream include for std::cout
* fix compilation for emscripten (wrap sendfile)
